Folding extension-ladder.



1, DEBING. FOLDING EXTENSION LADDER. APPLICATION FILED sEPT.25. 1915.

l l 79,8 1 O. Patented Apr. 18, 1916.

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l inarresin JACOB DEBNG, OF MCVILLE, NOB-TH DAKOTA.

FOLDING EXTENSION-LADDER.

Specification of Letters Patent.

Patented Apr. 1S, 1916.

Application filed September 25. 1915. Serial No. 52,644.

To all whom t may concern:

Be it known that l, JACOB DEBING, a citizen of the United States, residing at McVille, in the county of Nelson and State ofNorth Dakota, have invented new and useful Improvements in Folding Extension- Ladders, of which the following is a specification.

This invention relates to foldable extension ladders and it consists in the novel features hereinafter described and claimed.

An object of the invention is to provide a ladder structure consisting of sections detachably connected together, the said sections being collapsible or foldable whereby they may occupy but little space while in storage, transportation or otherwise when not in use as a ladder. With this object in View the sections are composed of side bars pivotally connected together in the manner of lazy tong levers, there being provided upon the extension section of the ladder pivotally mounted clips adapted to engage over the upper ends of the uppermost side bars of the body section of the ladder. Both sections of the ladder are provided with hooks which are engageable with the upper ends of the same pairs of side bars whereby the side bars are held at extended positions with relation to each other. Some of the side bars of the sections are provided with rounds upon which a person may step when ascending` or descending the ladder.

In the accompanying drawings :-Figure l is a side elevation of the ladder showing the sections connected together. Fig. 2 is an edge elevation of the same. Fig. 3 is a side elevation of one of the ladder sections showing the parts thereof collapsed.

The ladder comprises a body section 1 which is composed of a series of side bars pivotally connected together at points midway between their ends, the said side bars being indicated at 2. Some of the side bars 2 are connected together by rounds 3 and the upper ends of the uppermost bars 2 are chamfered or beveled as at 4t. The side bars 2 are connected together in the manner usually employed for connecting lazy tong levers, consequently when the said side bars are folded with relation to each other7 the body portion 1 of the ladder is in a collapsed condition. l

Hooks 5 are provided at the upper ends of two of the lowermost side bars 2 and are adapted to engage the pivot 6 which connects two of the lowermost side bars 2 with two of the next adjacent side bars 2 of the body structure 1.

The ladder extension 7 is composed of side bars 8 pivotally connected together in a manner similar to the connection between the side bars 2 of the body section of the ladder and some of the side bars S carry rounds 9. Hooks 10 are mounted at the upper ends of two of the lowermost side bars and are engageable with pivots 11 which connect the upper ends of the other two lowermost side bars 8 with the lower ends of two of the side bars at the upper portion of the ladder extension 7. rl`he lowermost side bars 8 of the ladder exten sion 7 are provided with pivotally mounted clips 12 which are adapted to engage over the chamfered ends 4; of the uppermost side bars of the body section 1 of the ladder when the extension section is applied thereto. lVhen the extension section is applied to the body section, the edges of the lowerinost side bars S of the extension section lie against the edges of the uppermost side bars 2 of the body section 1 and the said sections are held in close proximity to each other by means of the clips 12 hereinbefore described.

From the foregoing description taken in conjunction with the accompanying draw .ing it will be seen that when a long ladder is desired, the extension section is applied to the body section 1 and secured thereto in the manner indicated and when the sections are thus connected, a person may ascend or descend the ladder by stepping upon the rounds 3 and 9 of the two sections. a short ladder is desired one or the other of the said sections may be used. iWhen it is desired to collapse and fold the sections, the uppermost or extension section is disconnected from the body section 1 and the hooks 5 and 10 are disconnected from the pivots 6 and 11 and consequently both of the said sections may be collapsed or folded and will occupy but small space.

It will be seen that a ladder structure of simple design is provided and when the parts are connected together and extended, the ladder is substantial and owing to the structural arrangement of the parts, the ladder is light and may be readily'moved from point to point.

Having described the invention what is claimed is:

A ladder comprising a plurality of sections each composed of side bars pivotally connected in the form of lazy tongs, rounds carried by some of the side bars of both sections, hooks pivotztlly connected with the ends of some of the side bars of both sections and adapted to engage pivots at the ends of other side bars of the same section Whereby the sections are held in extended position., the uppermost ends of the uppermost side bars vof one section being beveled, the side edges of the loWermost :side bars of the JACOB ,DEBINGL Witnesses v VE. C. Orson-RD, AE. A. HOBBY.

'Copies of this patent may be obtained for ve cents each, by addressing the .Commissioner of Patents, Washington, `l). C. 

